期刊
ACTA MATERIALIA
卷 144, 期 -, 页码 352-364出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2017.10.069
关键词
Fine-grained materials; Low-energy EBSD; Phase differentiation confidence; Orientation determination confidence; Hydrostatic strain
资金
- AFOSR/MURI program [FA9550-12-1-0458]
- [MCF-677785]
Using the dictionary approach to Electron Backscatter Diffraction (EBSD) analysis, we address: (1) phase differentiation in highly-deformed or fine-grained materials; and (2) phase differentiation between phases with the same Bravais lattice and different lattice parameters. We introduce a phase differentiation confidence index based on the dictionary indexing approach and apply the index to scenarios where the classical EBSD indexing approach has major difficulties in delivering reliable results. We show that dictionary indexing successfully differentiates the phases in these scenarios and report on the confidence of such differentiations. We also show that dictionary indexing is sensitive to hydrostatic strain and can identify the correct amount of hydrostatic strain present in a material. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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